Mike...you ARE the man.

Thank you so much!

Hi,

I tried out some code similar to yours and I had a lot of trouble getting this working, too. But I finally figured it out.

The problem is the call to ShowToolTip. Since you are setting the AutoPopDelay to 0 - the tooltip will show up immediately anyway, so calling ShowToolTip is unnecessary.

The reason is causes a problem is that when you call ShowToolTip, the tooltip displays under the mouse. Since a new Window appearance under the mouse, this is essentially as though the mouse was moved off of the grid, so the MouseMove event of the grid fires and your code hides the tooltip - since the mouse is no longer over the caption.

Anyway, just removing the call to ShowToolTip should fix it. Here's the code that I used which works:

        private void ultraGrid1_MouseMove(object sender, MouseEventArgs e)
        {
            UltraGrid grid = (UltraGrid)sender;
            UIElement element = grid.DisplayLayout.UIElement.LastElementEntered;
            if (element != null)
            {

                CaptionAreaUIElement captionAreaUIElement = element as CaptionAreaUIElement;
                if (captionAreaUIElement == null)
                    captionAreaUIElement = element.GetAncestor(typeof(CaptionAreaUIElement)) as CaptionAreaUIElement;

                if (captionAreaUIElement != null)
                {
                    UltraToolTipInfo tooltipInfo = this.ultraToolTipManager1.GetUltraToolTip(grid);
                    this.ultraToolTipManager1.AutoPopDelay = 0;
                    tooltipInfo.ToolTipText = "This is a really long tooltip and it might be showing up behind hte form, I think.";
                    return;
                }
            }

            this.ultraToolTipManager1.SetUltraToolTip(grid, null);
        }

Thanks Mike,  I still can't get it to work...am I missing something?

    private void ugAlerts_MouseMove(object sender, MouseEventArgs e)
    {
      Object obj = ugAlerts.DisplayLayout.UIElement.ElementFromPoint(e.Location);
      if (obj.GetType() != typeof(Infragistics.Win.TextUIElement))
      {
        uttmTips.HideToolTip();
        return;
      }

      Infragistics.Win.TextUIElement tuie = obj as Infragistics.Win.TextUIElement;
      if (tuie.Parent.GetType() != typeof(Infragistics.Win.UltraWinGrid.CaptionAreaUIElement))
      {
        uttmTips.HideToolTip();
        return;
      }

      Control o = sender as Control;
      UltraToolTipInfo toolTipInfo = new UltraToolTipInfo("Hello", ToolTipImage.Info, "Comment:", DefaultableBoolean.True);
      toolTipInfo.Appearance.BackColor = Color.White;
      toolTipInfo.Appearance.BackColor2 = Color.Cornsilk;
      toolTipInfo.Appearance.BackGradientStyle = GradientStyle.Elliptical;
      toolTipInfo.Appearance.ForeColor = Color.Black;
      uttmTips.AutoPopDelay = 0;

      uttmTips.SetUltraToolTip(o, toolTipInfo);
      uttmTips.ShowToolTip(o);
    }